CHEK2 and breast cancer: The Genetic Testing Registry NCBI database lists 34 genes used for breast cancer detection used in 613 tests: AKT1, AR, ATM, BAPM, BARD1, BRCA1, BRCA2, BRCA3, BRIP1, CASP8, CDH1, CHEK2, CYP2D6, ERBB2, ESR1, HMMR, IL1B, IL1RN, KISS1R, KRAS, LFS3, MKRN3, NQ02, PALB2, PHB, PIK3CA, PPM1D, PTEN, RAD51, RAD54L, RB1CC1, SLC22A18, TP53, XRCC3 (https://www.ncbi.nlm.nih.gov/gtr/).